html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

.fab {
    display: none;
    position: absolute;
    right: 0.5rem;
    bottom: 0.5rem;
    /*z-index: 999;*/
}

/* 容器设置为 Flexbox 布局 */
#container {
    display: flex;
    flex-direction: column;
    height: 100%;
    & #title-input {
        flex-shrink: 0;
    }
    & #vditor {
        flex-grow: 1;
    }
}


